Abstract

This study investigated the changes in the chemical properties of the plow soil during a 7-year period with yearly application of anaerobically-digested manure (ADM), and the effect of the different ADM application methods on nitrogen (N) uptake by rice plants and the apparent N balance (input N minus output N). Among the treatments significant differences were observed in the pH, total N, and available N in the plow soil. The cumulative N uptake by rice plants in the ADM split application plots was significantly higher than that in single application plots. Consequently, the apparent N balance (input N minus output N) in the single ADM application plots was more positive. This result suggests that split application of ADM is more favorable for N uptake by rice plants. Although the apparent N balance was negative in the plots without N fertilizer, with chemical N and with low ADM, there was no observable decline in the total N and available N in the plow soil. This result implies that input and output of N in these plots were well balanced by additional N supply other than fertilization. On the other hand, the apparent N balance during the 7-year study under standard and heavy application of ADM was positive, indicating the preservation of soil fertility.

Details

Title
Nitrogen Uptake by the Rice Plant and Changes in the Soil Chemical Properties in the Paddy Rice Field during Yearly Application of Anaerobically-Digested Manure for Seven Years
Author
Nishikawa, Tomohiro 1 ; Li, Kunzhi 2 ; Inamura, Tatsuya 3 

 Graduate School of Agriculture, Kyoto University, Sakyo, Kyoto 606-8502, Japan; Agricultural Research Center, Tottori Prefectural Agriculture and Forest Research Institute, 260 Hashimoto, Tottori 680-1142, Japan 
 Graduate School of Agriculture, Kyoto University, Sakyo, Kyoto 606-8502, Japan; Faculty of Life Science and Biotechnology, Kunming University of Science and Technology, Kunming, Yunan 650024, China 
 Graduate School of Agriculture, Kyoto University, Sakyo, Kyoto 606-8502, Japan 
Pages
237-244
Publication year
2014
Publication date
Jan 2014
Publisher
Taylor & Francis Ltd.
ISSN
1343943X
e-ISSN
13491008
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
3089965305
Copyright
© 2014 Crop Science Society of Japan. This work is licensed under the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.